Friedrich Chill(R) Premier Inverter Smart Window Air Conditioner is ultra-quiet, adaptive and efficient comfort. With its state-of-the-art Precision Inverter(R) Technology provides efficient, precise temperature control and Library-Quiet(TM) sound levels, while convenience comes standard with simplified installation, and an adaptable design that allows the window to be opened, even after the unit is installed. Equipped with built-in Wi-Fi for convenient control via the FriedrichGo(TM) App, it ensures ultimate flexibility and ease of use. Turbo Cool delivers a remarkable 41% boost in cooling efficiency, while Library Quiet(TM) Operation ensures serene tranquility with noise levels as low as 42 dB. Soft-Start(TM) technology eliminates abrupt starts and stops, creating a peaceful oasis of comfort. With up to 35% greater efficiency than traditional units and ENERGY STAR(R) certification, our air conditioners lead the way in energy savings and environmental responsibility. Every Chill Premier Inverter model is a clever choice that delivers complete comfort and control.